This circuit was taken from a Popular Electronics from the 1990s. The circuit triggers a relay that disconnects the load.
This 1.2 to 32 V x 3 A regulator was found in an 80's EDN. The power components must be equipped...
This mixer configuration with the 741 operational amplifier can be found on several other circuits in...
This two-channel transmitter for the 27 MHz band was found in a recent English publication. The...